Ultra-fine glass wool is made from silicon powder through pressing and vacuumizing. So there is a big risk. Once the vacuum leak, powder in the package will fall, causing the package swell. The swell will cause a series of problems in the external walls. STP board with ultra-fine glass wool as core material have the above problems and air leakage risk. But it has little effect on project quality. We have compared these two materials. The product packaging is the same and the main difference is the inner core. Product with ultra-fine glass wool as core material has low heat conductivity coefficient, good thermal insulation effect, while product with silicon powder as core material is not as good as the former and cheaper.
Glass core material is an important component of VIP, playing an significant role on the heat conductivity coefficient of vacuum insulated panel. Vacuumized core material has certain intensity, which can play a framework supporting role. And the fiber distribution of core material determines the VIP adiabatic degree. Thus, the more uniform the fiber distribution of core material, The lower its heat conductivity coefficient and the better the insulating property.
